帮忙做几到被动语态～1、Is this the book which was written by your teach

帮忙做几到被动语态～
1、Is this the book which was written by your teacher?
2、If they are seen from the hilltop,the houses in the village look very small
3、When he arried at the station,he found the train had left
把不是被动语态的改成被动语态～把是被动语态的改成一般语态～